Question 1

can i use it on canon 5d mark ii?

Accepted Answer

Yes, but most of us bought it because we can't afford a 5D Mark II.  You'd probably be happier with the $250-$300 active extensions, which allow focus and aperture changes with it attached.  (this cheap metal tube does not)

Question 2

What will happen to the picture quality if the "inner glass" is removed? Also, whats the difference between this one and the other ones on the market??

Accepted Answer

After much testing with Canon FD 300mm prime and Tamron 500 reflex. 2 inner lenses destroys the sharpness. Removing both you lose infinity on Canon but not reflex lenses. Keep the thick inner lens remove the thin one. Perfect. Except now MFD is a little greater. Not important. Sharpness! Remove both for all common reflex lenses still keep infinity.

Question 3

Does this mount directly to the body?  I have a macro lens that I just bought but it is one the screws on to an adapter.  Will this work?

Accepted Answer

It doesn't fit directly onto the body of the Canon EOS M. YOu will need the mount adapter EF EOS M. I bought this with the 0.43x wide angle macro lens 58mm that screws onto the front of my lens.  It dose not fit the wide angle macro lens that I bought with it.  The wide angle macro lens fits onto the front of my Canon EFS 55-250mm lens. I bought it so I would have the option since it is cheap enough and it gives different results. But since it is manual and it doesn't communicate with my camera, the EOS M sends out a message that a lens is not attached to the camera. However, if you can get it to work with your camera, you can get real close with your zoom lens.

Question 4

Will this extension fit on my Canon Rebel t3i?

Accepted Answer

Miss: Alyssa C.  My one and only experience has been with the Canon Rebel T3.  However, on 30Jan2014 I bought a wide angle lens for my T3. The lens was for a T3i.  It fitted just right.  It works great in photography involving flowers.

Brand	Fotodiox
Model Number	M42-EF-V1
Model Year	2014
Zoom Range (including digital)	1
Lens Fixed Focal Length	35 Millimeters
Focal Length (wide)	0.01 Millimeters
Focal Length (tele)	0.01 Millimeters
Lens type	42mm
Type	Lens Adapter
Lens Configuration	Replaceable
Image Stabilization	Digital
Included Components	Fotodiox Lens Mount Adapter
Lens Motor Type	Fixed
Size	M42 Type 1
Batteries Included	No
Product Dimensions	2.54 x 2.54 x 2.54 cm; 20 g

Lens Mount Adapter for Canon EOS 1D, 1DS, Mark II, III, IV, 5D, Mark II, 7D, 40D, 50D, 60D, 70D, 70D, 70D, Black M42 (42mm x 1 Thread Mount) Digital Rebel T2i, T3i, T4i, T5i, SL1, C300, C500

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